[FFmpeg-trac] #6142(avformat:new): concat with safe 0 don't work if another list is included

[FFmpeg]

#6142: concat with safe 0 don't work if another list is included
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             Reporter:  jb_alvarado  |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avformat
              Version:  unspecified  |               Resolution:
             Keywords:  concat       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Marton Balint):

 * priority:  normal => wish
 * type:  defect => enhancement

Comment:

 This is not necessarily a bug, but a security feature. Maybe an additional
 mode for the safe option could cause the safe option to work recursively.

 What you can do right now is to specify options in the ffconcat file which
 will be passed to the nested demuxer. So if you specify

 {{{option safe 0}}}

 for every nested ffconcat file, then it should work.
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Ticket URL: <https://trac.ffmpeg.org/ticket/6142#comment:6>
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